Aboriginal artists have donated works of art to the Northern Territory's Environmental Defenders Office (EDO NT) in a final bid to keep it open after funding cuts.

The organisation is due to close at the end of June, after it lost $450,000 in Federal Government funding, following an announcement in 2013 EDOs across the country would be defunded.

Artists from several Aboriginal communities, including Lajamanu, Ramingining, and Haasts Bluff have donated several works to be auctioned online.

"It's been an incredible outpouring," David Morris, principal lawyer at the EDO NT, said.

"Particularly, I'm astounded at the response by places where we haven't worked that have heard about this and have said, we want to support this because there's a real potential that our community might need this service in the future."

One piece, Bing Bong, was donated by Garrawa man Jacky Green, who hails from Borroloola.

His art focuses on political depictions of the impact of mining on his land.

In particular, the impact of the McArthur River Mine, which is a GlencoreXstrata owned lead-zinc-silver mine about 70 kilometres from his community.

Since 2014, EDO NT has provided legal advice to the community about the mine.

"There's an enormous range," Mr Morris said.

"We've got paintings from artists down in Borroloola. They're clients I've worked with very closely and actually, the inception of the idea came from the artists down there."

EDO NT is hoping to raise between $30,000 and $50,000.

"So that we can put in place some processes to be sustainably funded in the future regardless of what governments are doing, so we want to try and attract ongoing supporters," Mr Morris said.

The auction will continue for another month and the organisation has already raised nearly $12,000 in bids.